#include <stdio.h>

int 
main(void)
{
    int num1, denom1, num2, denom2, result_num, result_denom;

    puts("Enter first fraction:");
    scanf("%d / %d", &num1, &denom1);

    puts("Enter second fraction:");
    scanf("%d / %d", &num2, &denom2);

    result_num = num1 * denom2 + num2 * denom1;
    result_denom = denom1 * denom2;
    printf("The sun is %d/%d\n", result_num, result_denom);

    return 0;
}
